Margot Quill: The Phantom of Gull Rock Light

Margot Quill: The Phantom of Gull Rock Light is a browser-based, choice-driven, AI-generated mystery, and the first of five cases for Margot Quill, a heroine created for SagaFlow rather than taken from a book or a myth.

Port Hollow, New England, 1972. Margot writes the Gazette's "Is It Real?" column, grew up backstage at her father's magic show, and has never met a ghost she could not explain with a wire, a pulley or a chemistry set. Now a glowing phantom keeper lights the dead lighthouse on Gull Rock and lures boats onto the reef while property developers circle the harbour. You spend the storm night on the island and decide how to unmask whoever is behind it.

Her later cases: The Wax Widow of Hargrove Hall, The Marsh Fiend of Blackwater Bog, The Laughing Ghost of the Midway and The Snowbound Specter of Ravenmoor. They unlock in order. This listing covers all five; the first case needs no account, the rest need a free sagaflow.ai account.

How it is made: the character and the case premises come from our team, but the story text itself is generated by AI. A language model wrote each case's opening scene in advance and writes every scene after it, with its options, as you play. The cover art, narration voice and music are AI-generated too.

Each scene gives you a few options, and from your fourth decision you can also write your own action, twice per case. A case runs about ten scenes.